Above-threshold detachment of negative ions by circularly polarized few-cycle laser fields

Lihua Bai; Yuheng Liu; Tingting Cui; Yan Wang; Dongmei Deng; Huifang Zhang

Chinese Optics Letters, 2011, 9 (1): 010202, Published Online: Jan. 7, 2011

Above-threshold detachment of negative ions by circularly polarized few-cycle laser fields Download： 593次

论文大纲

Lihua Bai Yuheng Liu Tingting Cui Yan Wang Dongmei Deng Huifang Zhang

Author Affiliations

Department of Physics, Shanghai University, Shanghai 200444, China

光电子角分布双光子电离激光波长 020.4180 Multiphoton processes 020.2649 Strong field laser physics

Abstract

In accordance with nonperturbative quantum scattering theory, we investigate photoelectron angular distributions (PADs) from above-threshold detachment (ATD) of negative ions irradiated by circularly polarized few-cycle laser fields. Electrons ejected on the polarization plane demonstrate distinct anisotropies in angular distributions which distinctly vary with the carrier-envelope (CE) phase. The anisotropy is caused by interference between transition channels; it also depends strongly on laser frequency, pulse duration, and kinetic energy of photoelectrons. Optimal emission of photoelectrons, which varies with CE phase, makes it possible to control photoelectron motion.

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Lihua Bai, Yuheng Liu, Tingting Cui, Yan Wang, Dongmei Deng, Huifang Zhang. Above-threshold detachment of negative ions by circularly polarized few-cycle laser fields[J]. Chinese Optics Letters, 2011, 9(1): 010202.

Above-threshold detachment of negative ions by circularly polarized few-cycle laser fields Download： 593次

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